Kid Booster Car Seat

car seat
Soup is the second album by the American rock band Blind Melon, released shortly before vocalist Shannon Hoon's fatal drug overdose, making it his final album with the band. Thematically, the album is much darker than the band's multi-platinum debut.
A car seat is the chair used in automobiles. Most car seats are made from cheap, but durable materials, made to withstand as much beating as possible. The material for these seats is usually used for the back of the seat, as well as the part where one's posterior goes.
a seat in a car

booster
A person or thing that helps increase or promote something, in particular
A keen promoter of a person, organization, or cause
A source of help or encouragement
supporter: a person who backs a politician or a team etc.; "all their supporters came out for the game"; "they are friends of the library"
promoter: someone who is an active supporter and advocate
a thief who steals goods that are in a store

kid
pull the leg of: tell false information to for fun; "Are you pulling my leg?"
be silly or tease one another; "After we relaxed, we just kidded around"
Deceive (someone) in a playful or teasing way
Deceive or fool (someone)
child: a young person of either sex; "she writes books for children"; "they're just kids"; "`tiddler' is a British term for youngster"